39 94 Proceedings of the Royal Irish Academy. 



The ante' nest mite, described and figured as this species by Canestrini and 

 Berlese in the references 1. 12. 25. does not altogether agree in the sculpturing 

 of the dorsum with the mite recorded from the above-mentioned localities. 

 However. Mr. Michael has taken a similar species in England, and he informs 

 me that his specimens were referred to the present species by Canestrini, so 

 that we must accept this identification of the British form, unless the latter 

 represents a local variety of the species. 



Has been found in Luxemburg, France, Bohemia, Italy and Britain. 



Dinychus tetraphyllus Berl. 



A. single specimen occurred amongst moss in the Westport district in 

 July. 



Quite a short description of this curiously formed mite was published by 

 Berlese (5, p. 247 ». More recently Tragardh has given a very full account 

 of the species with some good drawings of the nymph, male, and female 

 1 88, p. 450, ; it is a rich brown oval-shaped creature, and may be recognized 

 by the four blade4ike hairs placed on a narrow transverse plate close to the 

 hinder margin of the body, a little in front of these is another row of four 

 longer and more slender spines. 



Distribution. — Sweden ( Sarekgebirge, Tragardh ; Italy (under rotten 

 wood and also, though more rarely, in moss, Berlese). 



Family LABIDOSTOMMATIDAE. 

 Labidostomma cornuta X'an. et Fanzago'i. 



1877. Nicolctia cornuta. Canestrini et Fanzago 25. 



Achill and "Westport districts, not uncommon in moss on trees, and 

 under bark, during September. I have also found it in pine woods in 

 counties Dublin and TVicklow where it was noticeable enough on account of 

 its bright orange colour. 



There are two recorded European species of this curious genus which, 

 as regards its systematic position, has long been a trouble to acarologists. 

 Desciiptions and figures of both of these species may be found in Berlese's 

 work on Italian Mites (I). L. cornuta is said to differ from L. lutea, EJramer, 

 in being larger, and the front corners of the fore body are produced into 

 sharp points. Canestrini and Fanzago's figure of L. cornuta (Tav. Ill, fig. 2) 

 shows these very clearly. The Irish specimens that I have seen agree well 

 with L. cornuta except in the matter of size, the length being about 700/x. 

 In the original description the length is given as 1000/i, and according to 



